Description

I am a software engineer based in Germany, specialising in automation, backend development, and AI-enabled workflows for business operations.

I help companies and teams reduce manual work and improve reliability by designing clean, pragmatic systems — from data processing and API-driven backends to AI-assisted automation and internal tools. My focus is always on solutions that are easy to operate, well-documented, and ready for real-world use rather than prototypes.

My technical background includes Python (FastAPI), JavaScript (Node.js, React), SQL/MySQL, and workflow automation using modern tooling. I frequently work on tasks such as data cleaning and enrichment, system integrations, process automation, and AI-assisted decision support.

I value clear communication, structured problem-solving, and realistic delivery timelines. Clients typically work with me when they need a reliable engineer who can quickly understand business requirements and turn them into maintainable technical solutions.

I am open to short- and mid-term projects, especially in automation, internal platforms, and AI-assisted business workflows.

Languages

German
Native or bilingual
English
Native or bilingual
Chinese
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

TU Chemnitz
Software Engineer – Automation & AI Workflows
DIGITAL AND IT
January 2024 - Today (2 years and 5 months)
Chemnitz, Germany
• Designed and implemented automation and backend solutions for internal business workflows and data-driven use cases.
• Built Python-based APIs and services (FastAPI) to process, clean, and enrich structured datasets.
• Developed AI-assisted automation flows for classification, enrichment, and decision support, with a focus on reliability and explainability.
• Integrated external services and APIs, handling validation, error cases, and logging.
• Delivered clear documentation and maintainable solutions tailored for real operational use.
Python FastAPI automation API Integration Data Processing
TU Chemnitz
Software Engineer
January 2024 - Today (2 years and 5 months)
Chemnitz, Germany
• • Designed and implemented a full-stack management system using Python
• • Developed backend logic for data management and business workflows
• • Built web-based interfaces for system interaction and administration
• • Focused on clean structure, modular design, and maintainability
• • Implemented RESTful APIs and database integration for CRUD operations
TU Chemnitz
Research Assistant / Software Engineer (Simulation & Data Analysis)
DIGITAL AND IT
October 2023 - May 2024 (7 months)
Chemnitz, Germany
• Developed simulation and data analysis tools using Python to support research projects in networking and systems engineering.
• Designed modular, reusable code for discrete-event simulations and performance evaluation.
• Processed and analysed structured datasets, producing reproducible results and technical reports.
• Collaborated with academic and technical stakeholders to translate requirements into implementable software components.
Python Data Processing Simulation Software Engineering

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Master's degree
Technische Universität Chemnitz
2025
Master's degree

Yihong Zhai

Software Engineer

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